[P12]
Cause
Check code
Check code name
Indoor fan motor trouble
1. Wiring trouble of fan motor connector
2. Fan motor trouble
3. Indoor P.C. board trouble
NO
Model name f
or the indoor f
a
n motor
.
<Chec
king procedure>
Measure the resistance of the f
o
llo
wing ter
minals with the tester
.
Inter
nal motor circuit is damaged if the measured v
a
lue is out of
the r
a
nge in belo
w tab
le
.
[Action if the measurement is out of the r
a
nge]
If an
y measurement in the abo
v
e
tab
le is betw
een 0 to se
v
e
ral
100
Ω
, replace the indoor P
.C
. board together with the motor since
the indoor P
.C
. board is damaged.
NO
NO
YES
YES
YES
YES
YES
NO
NO
(Example;
Compact 4-w
a
y cassette type :
ICF-340D60-1)
Po
w
e
r o
ff
.
Replace the indoor P
.C
.
board (MCC-1643).
Replace the indoor P
.C
.
board (MCC-1643).
Chec
k the indoor P
.C
.
board (MCC-1643).
If f
ailure
Replace
Disconnect the connector CN210 to
the indoor P
.C
. board
Is the
connector CN210 of
indoor unit P
.C
. board
connected
correctly?
Does the
fan tur
n smoothly when
tur
ned b
y hand?
Is each
resistance v
alue
on the motor side of the
fan motor connector CN210
of the indoor P
.C
.
board correct?
Is F01 of the
indoor P
.C
. board
nor
mal?
Is R04 or R05
of the indoor P
.C
. board
nor
mal?
Pin No
.
7
Color
Blue
Y
ello
w
White
Blac
k
—
—
Red
Measure b
y connecting the com side to
4
(Blac
k) while measur
ing.
The measurement ma
y v
ar
y.
Measurement place
Resistance v
alue
a, b
, c
I.
Betw
een
4
(Blac
k) -
1
(Red)
(M
Ω
)
II.
Betw
een
4
(Blac
k) -
5
(White)
35k – 65k
Ω
III.
Betw
een
4
(Blac
k) -
6
(Y
ello
w)
130k – 170k
Ω
IV
.
Betw
een
4
(Blac
k) -
7
(Blue)
(M
Ω
∞
∞
)
Replace the indoor
fan motor
.
Replace the indoor
fan motor
.
Repair the connector
connection.
654321
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